Since the message refers to a 'dereferenced value', it is probably referring to the line:
ErrorCode = *u8_ErrorCode;
I don't see the buffer that u8_ErrorCode points to, in the code snippet itself. Maybe, u8_ErrorCode has not been made to point to a buffer before being passed to Func_Process_ReadData ?
PS Your workflow of using the HTML report to locate an issue seems quite tedious. Since you do have access to the code, I am wondering why you are not reviewing the results in the Polyspace desktop UI (or in a web browser with Polyspace Access). Anyway, if you contact Technical Support, they might provide you better solutions with the HTML report.